Summary
Report type: immediate notification
Started: 20 Aug 2021
Confirmed: 26 Aug 2021
Reported: 1 Sep 2021
Reason for notification: recurrence
Last occurrence: 25 Jan 2021
Causal agent: highly pathogenic avian influenza virus
Serotype: H5N1
Nature of diagnosis: clinical, laboratory
This event pertains to a defined zone within the country.

New outbreaks (1)
Summary of outbreaks
Total outbreaks (1)
Outbreak location 1: Khudajberdinsky, Argayashskiy rayon, Chelyabinsk
Started: 20 Aug 2021
Epidemiological unit: farm
Total animals affected:
Species / Susceptible / Cases / Deaths / Killed and disposed of /
Slaughtered or killed for commercial use / Vaccinated
Birds / 17 000 / 2013 / 2013 / - / 0 / 0

Epidemiology
Source of the outbreak(s) or origin of infection: unknown or
inconclusive

Control measures applied in domestic: zoning, surveillance within
containment and/or the protection zone; quarantine; screening;
official disposal of carcasses, by-products, and waste; movement
control inside the country; disinfection; control of wildlife
reservoirs

Diagnostic test results
Laboratory name and type / Species / Test / Test date / Result
Chelyabinskaya Veterinary Laboratory local laboratory/ birds /
real-time polymerase chain reaction (real-time PCR) / positive 
Federal Centre for Animal Health (FGBI "ARRIAH") OIE reference
laboratory / birds / real-time reverse transcription polymerase chain
reaction (rRT-PCR) / positive
Federal Centre for Animal Health (FGBI "ARRIAH") OIE reference
laboratory / birds / gene sequencing / positive